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Type D Kouhyouteki Kai (Kouryuu Kai)

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Type D Target Mk.1 (Kōryū Mk.1)
No.364 甲標的 丁型改(蛟龍改)
Torpedo.png Midget Submarine
Effects: Torpedo+17 Accuracy+2 LoS+2
Scrap value: Fuel 4 Ammo 9 Steel 12 Bauxite 4 (Unbuildable)

Equipment Card Type D Kouhyouteki Kai (Kouryuu Kai).png

Equipment Character Type D Kouhyouteki Kai (Kouryuu Kai).png

Equipment Item Type D Kouhyouteki Kai (Kouryuu Kai).png

Equipment Full Type D Kouhyouteki Kai (Kouryuu Kai).png

Refittable Class
Coastal Defense Ship Destroyer
Light Cruiser Torpedo Cruiser
Heavy Cruiser Training Cruiser
Aviation Cruiser Fast Battleship
Battleship Aviation Battleship
Light Carrier Standard Aircraft Carrier
Armored Carrier Seaplane Tender
Submarine Aircraft Carrying Submarine
Submarine Tender Fleet Oiler
Repair Ship Amphibious Assault Ship



This was an independently developed "Special Submarine" that was an improvement over the previous late-model.
It is an enlarged version of the Type-A Midget Submarine with increased cruising range and communications capability. With the crew count increased to 5 members and 2 bow-mounted 45 cm torpedo tubes, this is closer to a mini-submarine than an improved midget submarine.
It was originally designed to be operated from a ship, but this improved model can operate independently to support other ships.


Midget SubmarineMinisub Midget Submarine allow any ship equipping one to perform an Opening Torpedo Salvo. Their main stat is the "torpedo" Torpedo Attack stat, being used to calculate damages in all torpedo phases.


Not to be confused with other crafts of this family (see here).

How To Obtain

From quest: B141 (choice)

Ranking reward for:

  • Jun 2020: 1-5
  • Dec 2022: 1-5 (★+2), 6-20
  • Dec 2023: 1-5 (★+3)

Updates History

  • 2020-01-14: Implemented

Fit Bonuses

Ship Extra Requirement Firepower Torpedo Attack Anti-Air Anti-Submarine Warfare Line of Sight Armor Evasion Note
Yuubari Kai Ni TokuYuubari Kai Ni Toku +1 +4 -2
Kitakami Kai NiKitakami Kai Ni +2 -2
Ooi Kai NiOoi Kai Ni
Nisshin ANisshin A
Kuma Kai Ni DKuma Kai Ni D
Mogami Kai Ni TokuMogami Kai Ni Toku
Yahagi Kai Ni BYahagi Kai Ni B
+1 -2
Yura Kai NiYura Kai Ni
Abukuma Kai NiAbukuma Kai Ni
Kiso Kai NiKiso Kai Ni
Other AV
-1 -7

See Also